.box {
    padding: 10px;
    background-color: red;
}
/* img {
    float: left
} */
.box:after{
    content: '';
    clear: both;
    display: table;
}
table{
    width: 280px;
    text-align: left;
    margin: 0 auto;

}
.father{
    width: 100px;
    background-color: green;
    /*white-space: nowrap;*/
}
.son{
    display: inline-block;
}

.imgsContainer{
    width: 300px;
    height: 160px;
    overflow: hidden;
    position: relative;
}

.imgsContainer > ul {
    position: absolute;
    white-space: nowrap;
}
.imgsContainer li {
    display: inline-block;
}
.inlinebox {
    width: 100px;
    height: 100px;
    background-color: green;
    padding-left: 200px;
}
textarea {
    box-sizing: border-box;
    padding: 10px;
    width: 100%;
}

.ele{
    max-width: 100px;
    overflow: hidden;
    transition: max-width 0.5s;
}
.ele:hover {
    max-width: 200px;
}

.imgalt{
    display: inline-block;
    height: 400px;
    width: 300px;
    position: relative;
    background-color: gray;
    overflow: hidden;
}


/* .imgalt:not([src]) {
    visibility: hidden;
}
.imgalt::after{
    content: attr(alt);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    transform: translateY(100%);
    transition: 0.2s;
    background-color: #fa8af3;
    visibility: visible;
}
.imgalt::after:hover {
    transform: translateY(0);
} */

.img:not([src]) {
    visibility: hidden;
}

.img{
    display: inline-block;
    position: relative;
    width: 200px;
    height: 200px;
    overflow: hidden;
}

img::before{
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    background-color: rgb(188, 210, 218);
    visibility: visible;
}

img::after{
    content: attr(alt);
    position: absolute;
    width: 100%;
    left: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    transform: translateY(100%);
    transition: transform 0.2s;
    visibility: visible;
    /* line-height: 30px; */
}

img:hover::after{
    transform: translateY(0);

}

.img:hover{
    content: url('./')
}

div:empty{
    content: '随便嘻嘻嘻';
}
.bgc:after{
    content: '';
    display: inline-block;
    width: 200px;
    height: 200px;
    background-image: url('./range.png');
}

a + a::before{
    content: '';
    padding: 10px 3px 1px;
    margin-left: 6px;
    border-left: 1px solid gray;
}

h3{
    font-size: 18px;
    /* padding: 50px 0 0; */
}
h3 > span{
    padding: 50px 0 0;
}

button{
    position: absolute;
    clip: rect(0, 0, 0, 0);
}
label{
    display: inline-block;
    line-height: 20px;
    /* padding: 10px; */
}

.icon-menu{
    width: 140px;
    height: 10px;
    padding: 60px 0;
    border-top: 10px solid;
    border-bottom: 10px solid;
    background-color: currentColor;
    background-clip: content-box;
}

.icon-dot{
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 10px solid;
    padding: 50px;
    background-clip: content-box;
    background-color: #000;
}

.mar{
    overflow: hidden;
    border-style: dotted;
    border: 200px;
}

.mar > p{
    /* margin-left: 133px; */
}

.mar > img {
    width: 100px;
    float: left;
}

.container{
    width: 600px;
    overflow: hidden;
}
.container div{
    width: 50%;
}

.boxx{
    height: 400px;
    width: 400px;
    overflow: hidden;
    position: relative;
}

.boxx::before{
    content: '';
    position: absolute;
    background-color: black;
    width: 300px;
    height: 300px;
}

.dotted{
    /* width: 100%; */
    /* height: 100%; */
    /* width: 150px;
    height: 150px; */
    border: 149px red dotted;
    overflow: hidden;
}
.dotted::before{
    position: absolute;
    background-color: black;
    width: 400px;
    height: 300px;
}
.add{
    position: relative;
    width: 80px;
    height: 80px;
    border: 2px dashed;
    color: darkgray;
}
.add::before{
    content: '';
    width: 36px;
    border-top: solid 10px;
    margin: -5px 0 0 -18px;
    top: 50%;
    left: 50%;
    position: absolute;
}

.add::after{
    content: '';
    height: 36px;
    border-left: solid 10px;
    margin: -18px 0 0 -5px;
    top: 50%;
    left: 50%;
    position: absolute;
}

.add:hover{
    color: brown;
}

.triangle{
    width: 0px;
    border-width: 10px 25px;
    border-style: solid;
    border-color: red green yellow salmon;
    /*border-color: red  transparent transparent transparent;*/
}

.test-font{
    width: 200px;
    font-size: 30px;
    line-height: 120px;
    background-color: yellow;

}
.fonttest{
    font-size: 24px;
}

.test-font span{
    background-color: white;
}
.t1 span{
    background-color: red;
}
.t2 span{
    background-color: green;
}
.t3 span{
    background-color: goldenrod;
}
.t1{
    line-height: 2;
}
.t2{
    line-height: 1.5;
}
.t3{
    line-height: 0.5;
}

.imgheight{
    line-height: 120px;
}

.box-content{
    width: 300px;
    /*height: 180px;*/
    line-height: 100px;
    background-color: rosybrown;
    /*vertical-align: middle;*/

    /*margin: ;*/
}

.box-content div{
    display: inline-block;
    line-height: 20px;
    vertical-align: middle;

}

.lbox{
    line-height: 32px !important;
}
.lbox > span{
    font-size: 24px !important;
}